| 1 | //===-- Implementation of putc --------------------------------------------===// |
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| 2 | // |
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| 3 | // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. |
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| 4 | // See https://llvm.org/LICENSE.txt for license information. |
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| 5 | // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception |
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| 6 | // |
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| 7 | //===----------------------------------------------------------------------===// |
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| 8 | |
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| 9 | #include "src/stdio/putc.h" |
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| 10 | #include "src/__support/File/file.h" |
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| 11 | |
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| 12 | #include "hdr/types/FILE.h" |
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| 13 | #include "src/__support/libc_errno.h" |
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| 14 | #include "src/__support/macros/config.h" |
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| 15 | #include <stddef.h> |
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| 16 | |
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| 17 | namespace LIBC_NAMESPACE_DECL { |
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| 18 | |
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| 19 | LLVM_LIBC_FUNCTION(int, putc, (int c, ::FILE *stream)) { |
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| 20 | unsigned char uc = static_cast<unsigned char>(c); |
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| 21 | |
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| 22 | auto result = reinterpret_cast<LIBC_NAMESPACE::File *>(stream)->write(&uc, 1); |
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| 23 | if (result.has_error()) |
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| 24 | libc_errno = result.error; |
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| 25 | size_t written = result.value; |
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| 26 | |
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| 27 | if (1 != written) { |
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| 28 | // The stream should be in an error state in this case. |
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| 29 | return EOF; |
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| 30 | } |
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| 31 | return 0; |
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| 32 | } |
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| 33 | |
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| 34 | } // namespace LIBC_NAMESPACE_DECL |
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| 35 | |
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